mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 05:30:52 +07:00
NFS: Clean up nfsroot.c
Clean up: now that mount option parsing for nfsroot is handled in fs/nfs/super.c, remove code in fs/nfs/nfsroot.c that is no longer used. This includes code that constructs the legacy nfs_mount_data structure, and code that does a MNT call to the server. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever
Trond Myklebust
parent
56463e50d1
commit
8d23210378
419
fs/nfs/nfsroot.c
419
fs/nfs/nfsroot.c
@ -71,22 +71,12 @@
|
||||
|
||||
#include <linux/types.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/time.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/sunrpc/clnt.h>
|
||||
#include <linux/sunrpc/xprtsock.h>
|
||||
#include <linux/nfs.h>
|
||||
#include <linux/nfs_fs.h>
|
||||
#include <linux/nfs_mount.h>
|
||||
#include <linux/in.h>
|
||||
#include <linux/major.h>
|
||||
#include <linux/utsname.h>
|
||||
#include <linux/inet.h>
|
||||
#include <linux/root_dev.h>
|
||||
#include <net/ipconfig.h>
|
||||
#include <linux/parser.h>
|
||||
|
||||
#include "internal.h"
|
||||
|
||||
@ -94,9 +84,6 @@
|
||||
#undef NFSROOT_DEBUG
|
||||
#define NFSDBG_FACILITY NFSDBG_ROOT
|
||||
|
||||
/* Default port to use if server is not running a portmapper */
|
||||
#define NFS_MNT_PORT 627
|
||||
|
||||
/* Default path we try to mount. "%s" gets replaced by our IP address */
|
||||
#define NFS_ROOT "/tftpboot/%s"
|
||||
|
||||
@ -107,7 +94,7 @@ static char nfs_root_parms[256] __initdata = "";
|
||||
static char nfs_root_options[256] __initdata = "";
|
||||
|
||||
/* Address of NFS server */
|
||||
static __be32 servaddr __initdata = 0;
|
||||
static __be32 servaddr __initdata = htonl(INADDR_NONE);
|
||||
|
||||
/* Name of directory to mount */
|
||||
static char nfs_export_path[NFS_MAXPATHLEN + 1] __initdata = "";
|
||||
@ -115,279 +102,6 @@ static char nfs_export_path[NFS_MAXPATHLEN + 1] __initdata = "";
|
||||
/* server:export path string passed to super.c */
|
||||
static char nfs_root_device[NFS_MAXPATHLEN + 1] __initdata = "";
|
||||
|
||||
/* NFS-related data */
|
||||
static struct nfs_mount_data nfs_data __initdata = { 0, };/* NFS mount info */
|
||||
static int nfs_port __initdata = 0; /* Port to connect to for NFS */
|
||||
static int mount_port __initdata = 0; /* Mount daemon port number */
|
||||
|
||||
|
||||
/***************************************************************************
|
||||
|
||||
Parsing of options
|
||||
|
||||
***************************************************************************/
|
||||
|
||||
enum {
|
||||
/* Options that take integer arguments */
|
||||
Opt_port, Opt_rsize, Opt_wsize, Opt_timeo, Opt_retrans, Opt_acregmin,
|
||||
Opt_acregmax, Opt_acdirmin, Opt_acdirmax,
|
||||
/* Options that take no arguments */
|
||||
Opt_soft, Opt_hard, Opt_intr,
|
||||
Opt_nointr, Opt_posix, Opt_noposix, Opt_cto, Opt_nocto, Opt_ac,
|
||||
Opt_noac, Opt_lock, Opt_nolock, Opt_v2, Opt_v3, Opt_udp, Opt_tcp,
|
||||
Opt_acl, Opt_noacl,
|
||||
/* Error token */
|
||||
Opt_err
|
||||
};
|
||||
|
||||
static const match_table_t tokens __initconst = {
|
||||
{Opt_port, "port=%u"},
|
||||
{Opt_rsize, "rsize=%u"},
|
||||
{Opt_wsize, "wsize=%u"},
|
||||
{Opt_timeo, "timeo=%u"},
|
||||
{Opt_retrans, "retrans=%u"},
|
||||
{Opt_acregmin, "acregmin=%u"},
|
||||
{Opt_acregmax, "acregmax=%u"},
|
||||
{Opt_acdirmin, "acdirmin=%u"},
|
||||
{Opt_acdirmax, "acdirmax=%u"},
|
||||
{Opt_soft, "soft"},
|
||||
{Opt_hard, "hard"},
|
||||
{Opt_intr, "intr"},
|
||||
{Opt_nointr, "nointr"},
|
||||
{Opt_posix, "posix"},
|
||||
{Opt_noposix, "noposix"},
|
||||
{Opt_cto, "cto"},
|
||||
{Opt_nocto, "nocto"},
|
||||
{Opt_ac, "ac"},
|
||||
{Opt_noac, "noac"},
|
||||
{Opt_lock, "lock"},
|
||||
{Opt_nolock, "nolock"},
|
||||
{Opt_v2, "nfsvers=2"},
|
||||
{Opt_v2, "v2"},
|
||||
{Opt_v3, "nfsvers=3"},
|
||||
{Opt_v3, "v3"},
|
||||
{Opt_udp, "proto=udp"},
|
||||
{Opt_udp, "udp"},
|
||||
{Opt_tcp, "proto=tcp"},
|
||||
{Opt_tcp, "tcp"},
|
||||
{Opt_acl, "acl"},
|
||||
{Opt_noacl, "noacl"},
|
||||
{Opt_err, NULL}
|
||||
|
||||
};
|
||||
|
||||
/*
|
||||
* Parse option string.
|
||||
*/
|
||||
|
||||
static int __init root_nfs_parse(char *name, char *buf)
|
||||
{
|
||||
|
||||
char *p;
|
||||
substring_t args[MAX_OPT_ARGS];
|
||||
int option;
|
||||
|
||||
if (!name)
|
||||
return 1;
|
||||
|
||||
/* Set the NFS remote path */
|
||||
p = strsep(&name, ",");
|
||||
if (p[0] != '\0' && strcmp(p, "default") != 0)
|
||||
strlcpy(buf, p, NFS_MAXPATHLEN);
|
||||
|
||||
while ((p = strsep (&name, ",")) != NULL) {
|
||||
int token;
|
||||
if (!*p)
|
||||
continue;
|
||||
token = match_token(p, tokens, args);
|
||||
|
||||
/* %u tokens only. Beware if you add new tokens! */
|
||||
if (token < Opt_soft && match_int(&args[0], &option))
|
||||
return 0;
|
||||
switch (token) {
|
||||
case Opt_port:
|
||||
nfs_port = option;
|
||||
break;
|
||||
case Opt_rsize:
|
||||
nfs_data.rsize = option;
|
||||
break;
|
||||
case Opt_wsize:
|
||||
nfs_data.wsize = option;
|
||||
break;
|
||||
case Opt_timeo:
|
||||
nfs_data.timeo = option;
|
||||
break;
|
||||
case Opt_retrans:
|
||||
nfs_data.retrans = option;
|
||||
break;
|
||||
case Opt_acregmin:
|
||||
nfs_data.acregmin = option;
|
||||
break;
|
||||
case Opt_acregmax:
|
||||
nfs_data.acregmax = option;
|
||||
break;
|
||||
case Opt_acdirmin:
|
||||
nfs_data.acdirmin = option;
|
||||
break;
|
||||
case Opt_acdirmax:
|
||||
nfs_data.acdirmax = option;
|
||||
break;
|
||||
case Opt_soft:
|
||||
nfs_data.flags |= NFS_MOUNT_SOFT;
|
||||
break;
|
||||
case Opt_hard:
|
||||
nfs_data.flags &= ~NFS_MOUNT_SOFT;
|
||||
break;
|
||||
case Opt_intr:
|
||||
case Opt_nointr:
|
||||
break;
|
||||
case Opt_posix:
|
||||
nfs_data.flags |= NFS_MOUNT_POSIX;
|
||||
break;
|
||||
case Opt_noposix:
|
||||
nfs_data.flags &= ~NFS_MOUNT_POSIX;
|
||||
break;
|
||||
case Opt_cto:
|
||||
nfs_data.flags &= ~NFS_MOUNT_NOCTO;
|
||||
break;
|
||||
case Opt_nocto:
|
||||
nfs_data.flags |= NFS_MOUNT_NOCTO;
|
||||
break;
|
||||
case Opt_ac:
|
||||
nfs_data.flags &= ~NFS_MOUNT_NOAC;
|
||||
break;
|
||||
case Opt_noac:
|
||||
nfs_data.flags |= NFS_MOUNT_NOAC;
|
||||
break;
|
||||
case Opt_lock:
|
||||
nfs_data.flags &= ~NFS_MOUNT_NONLM;
|
||||
break;
|
||||
case Opt_nolock:
|
||||
nfs_data.flags |= NFS_MOUNT_NONLM;
|
||||
break;
|
||||
case Opt_v2:
|
||||
nfs_data.flags &= ~NFS_MOUNT_VER3;
|
||||
break;
|
||||
case Opt_v3:
|
||||
nfs_data.flags |= NFS_MOUNT_VER3;
|
||||
break;
|
||||
case Opt_udp:
|
||||
nfs_data.flags &= ~NFS_MOUNT_TCP;
|
||||
break;
|
||||
case Opt_tcp:
|
||||
nfs_data.flags |= NFS_MOUNT_TCP;
|
||||
break;
|
||||
case Opt_acl:
|
||||
nfs_data.flags &= ~NFS_MOUNT_NOACL;
|
||||
break;
|
||||
case Opt_noacl:
|
||||
nfs_data.flags |= NFS_MOUNT_NOACL;
|
||||
break;
|
||||
default:
|
||||
printk(KERN_WARNING "Root-NFS: unknown "
|
||||
"option: %s\n", p);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Prepare the NFS data structure and parse all options.
|
||||
*/
|
||||
static int __init root_nfs_name(char *name)
|
||||
{
|
||||
static char buf[NFS_MAXPATHLEN] __initdata;
|
||||
char *cp;
|
||||
|
||||
/* Set some default values */
|
||||
memset(&nfs_data, 0, sizeof(nfs_data));
|
||||
nfs_port = -1;
|
||||
nfs_data.version = NFS_MOUNT_VERSION;
|
||||
nfs_data.flags = NFS_MOUNT_NONLM; /* No lockd in nfs root yet */
|
||||
nfs_data.rsize = NFS_DEF_FILE_IO_SIZE;
|
||||
nfs_data.wsize = NFS_DEF_FILE_IO_SIZE;
|
||||
nfs_data.acregmin = NFS_DEF_ACREGMIN;
|
||||
nfs_data.acregmax = NFS_DEF_ACREGMAX;
|
||||
nfs_data.acdirmin = NFS_DEF_ACDIRMIN;
|
||||
nfs_data.acdirmax = NFS_DEF_ACDIRMAX;
|
||||
strcpy(buf, NFS_ROOT);
|
||||
|
||||
/* Process options received from the remote server */
|
||||
root_nfs_parse(root_server_path, buf);
|
||||
|
||||
/* Override them by options set on kernel command-line */
|
||||
root_nfs_parse(name, buf);
|
||||
|
||||
cp = utsname()->nodename;
|
||||
if (strlen(buf) + strlen(cp) > NFS_MAXPATHLEN) {
|
||||
printk(KERN_ERR "Root-NFS: Pathname for remote directory too long.\n");
|
||||
return -1;
|
||||
}
|
||||
sprintf(nfs_export_path, buf, cp);
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Get NFS server address.
|
||||
*/
|
||||
static int __init root_nfs_addr(void)
|
||||
{
|
||||
if ((servaddr = root_server_addr) == htonl(INADDR_NONE)) {
|
||||
printk(KERN_ERR "Root-NFS: No NFS server available, giving up.\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
snprintf(nfs_data.hostname, sizeof(nfs_data.hostname),
|
||||
"%pI4", &servaddr);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Tell the user what's going on.
|
||||
*/
|
||||
#ifdef NFSROOT_DEBUG
|
||||
static void __init root_nfs_print(void)
|
||||
{
|
||||
printk(KERN_NOTICE "Root-NFS: Mounting %s on server %s as root\n",
|
||||
nfs_export_path, nfs_data.hostname);
|
||||
printk(KERN_NOTICE "Root-NFS: rsize = %d, wsize = %d, timeo = %d, retrans = %d\n",
|
||||
nfs_data.rsize, nfs_data.wsize, nfs_data.timeo, nfs_data.retrans);
|
||||
printk(KERN_NOTICE "Root-NFS: acreg (min,max) = (%d,%d), acdir (min,max) = (%d,%d)\n",
|
||||
nfs_data.acregmin, nfs_data.acregmax,
|
||||
nfs_data.acdirmin, nfs_data.acdirmax);
|
||||
printk(KERN_NOTICE "Root-NFS: nfsd port = %d, mountd port = %d, flags = %08x\n",
|
||||
nfs_port, mount_port, nfs_data.flags);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
static int __init root_nfs_init(void)
|
||||
{
|
||||
#ifdef NFSROOT_DEBUG
|
||||
nfs_debug |= NFSDBG_ROOT;
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Decode the root directory path name and NFS options from
|
||||
* the kernel command line. This has to go here in order to
|
||||
* be able to use the client IP address for the remote root
|
||||
* directory (necessary for pure RARP booting).
|
||||
*/
|
||||
if (root_nfs_name(nfs_root_parms) < 0 ||
|
||||
root_nfs_addr() < 0)
|
||||
return -1;
|
||||
|
||||
#ifdef NFSROOT_DEBUG
|
||||
root_nfs_print();
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Parse NFS server and directory information passed on the kernel
|
||||
* command line.
|
||||
@ -424,137 +138,6 @@ static int __init nfs_root_setup(char *line)
|
||||
|
||||
__setup("nfsroot=", nfs_root_setup);
|
||||
|
||||
/***************************************************************************
|
||||
|
||||
Routines to actually mount the root directory
|
||||
|
||||
***************************************************************************/
|
||||
|
||||
/*
|
||||
* Construct sockaddr_in from address and port number.
|
||||
*/
|
||||
static inline void
|
||||
set_sockaddr(struct sockaddr_in *sin, __be32 addr, __be16 port)
|
||||
{
|
||||
sin->sin_family = AF_INET;
|
||||
sin->sin_addr.s_addr = addr;
|
||||
sin->sin_port = port;
|
||||
}
|
||||
|
||||
/*
|
||||
* Query server portmapper for the port of a daemon program.
|
||||
*/
|
||||
static int __init root_nfs_getport(int program, int version, int proto)
|
||||
{
|
||||
struct sockaddr_in sin;
|
||||
|
||||
printk(KERN_NOTICE "Looking up port of RPC %d/%d on %pI4\n",
|
||||
program, version, &servaddr);
|
||||
set_sockaddr(&sin, servaddr, 0);
|
||||
return rpcb_getport_sync(&sin, program, version, proto);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Use portmapper to find mountd and nfsd port numbers if not overriden
|
||||
* by the user. Use defaults if portmapper is not available.
|
||||
* XXX: Is there any nfs server with no portmapper?
|
||||
*/
|
||||
static int __init root_nfs_ports(void)
|
||||
{
|
||||
int port;
|
||||
int nfsd_ver, mountd_ver;
|
||||
int nfsd_port, mountd_port;
|
||||
int proto;
|
||||
|
||||
if (nfs_data.flags & NFS_MOUNT_VER3) {
|
||||
nfsd_ver = NFS3_VERSION;
|
||||
mountd_ver = NFS_MNT3_VERSION;
|
||||
nfsd_port = NFS_PORT;
|
||||
mountd_port = NFS_MNT_PORT;
|
||||
} else {
|
||||
nfsd_ver = NFS2_VERSION;
|
||||
mountd_ver = NFS_MNT_VERSION;
|
||||
nfsd_port = NFS_PORT;
|
||||
mountd_port = NFS_MNT_PORT;
|
||||
}
|
||||
|
||||
proto = (nfs_data.flags & NFS_MOUNT_TCP) ? IPPROTO_TCP : IPPROTO_UDP;
|
||||
|
||||
if (nfs_port < 0) {
|
||||
if ((port = root_nfs_getport(NFS_PROGRAM, nfsd_ver, proto)) < 0) {
|
||||
printk(KERN_ERR "Root-NFS: Unable to get nfsd port "
|
||||
"number from server, using default\n");
|
||||
port = nfsd_port;
|
||||
}
|
||||
nfs_port = port;
|
||||
dprintk("Root-NFS: Portmapper on server returned %d "
|
||||
"as nfsd port\n", port);
|
||||
}
|
||||
|
||||
if ((port = root_nfs_getport(NFS_MNT_PROGRAM, mountd_ver, proto)) < 0) {
|
||||
printk(KERN_ERR "Root-NFS: Unable to get mountd port "
|
||||
"number from server, using default\n");
|
||||
port = mountd_port;
|
||||
}
|
||||
mount_port = port;
|
||||
dprintk("Root-NFS: mountd port is %d\n", port);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Get a file handle from the server for the directory which is to be
|
||||
* mounted.
|
||||
*/
|
||||
static int __init root_nfs_get_handle(void)
|
||||
{
|
||||
struct sockaddr_in sin;
|
||||
unsigned int auth_flav_len = 0;
|
||||
struct nfs_mount_request request = {
|
||||
.sap = (struct sockaddr *)&sin,
|
||||
.salen = sizeof(sin),
|
||||
.dirpath = nfs_export_path,
|
||||
.version = (nfs_data.flags & NFS_MOUNT_VER3) ?
|
||||
NFS_MNT3_VERSION : NFS_MNT_VERSION,
|
||||
.protocol = (nfs_data.flags & NFS_MOUNT_TCP) ?
|
||||
XPRT_TRANSPORT_TCP : XPRT_TRANSPORT_UDP,
|
||||
.auth_flav_len = &auth_flav_len,
|
||||
};
|
||||
int status = -ENOMEM;
|
||||
|
||||
request.fh = nfs_alloc_fhandle();
|
||||
if (!request.fh)
|
||||
goto out;
|
||||
set_sockaddr(&sin, servaddr, htons(mount_port));
|
||||
status = nfs_mount(&request);
|
||||
if (status < 0)
|
||||
printk(KERN_ERR "Root-NFS: Server returned error %d "
|
||||
"while mounting %s\n", status, nfs_export_path);
|
||||
else {
|
||||
nfs_data.root.size = request.fh->size;
|
||||
memcpy(&nfs_data.root.data, request.fh->data, request.fh->size);
|
||||
}
|
||||
nfs_free_fhandle(request.fh);
|
||||
out:
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* Get the NFS port numbers and file handle, and return the prepared 'data'
|
||||
* argument for mount() if everything went OK. Return NULL otherwise.
|
||||
*/
|
||||
void * __init old_nfs_root_data(void)
|
||||
{
|
||||
if (root_nfs_init() < 0
|
||||
|| root_nfs_ports() < 0
|
||||
|| root_nfs_get_handle() < 0)
|
||||
return NULL;
|
||||
set_sockaddr((struct sockaddr_in *) &nfs_data.addr, servaddr, htons(nfs_port));
|
||||
return (void*)&nfs_data;
|
||||
}
|
||||
|
||||
static int __init root_nfs_copy(char *dest, const char *src,
|
||||
const size_t destlen)
|
||||
{
|
||||
|
||||
Loading…
Reference in New Issue
Block a user